The common octopus is a highly intelligent, active predator. It even has a secret weapon - special glands produce a venom that it uses to incapacitate its prey!

Red squirrels are native to the UK but are a lot rarer than their grey cousins. They live in a few special places across the UK thanks to reintroduction projects.

This brilliant red and white sea slug would make the perfect nudibranch for a Christmas card image or perhaps a football team mascot!

Look for Water avens in damp habitats, such as riversides, wet woodlands and wet meadows. It has nodding, purple-and-orange flowers that hang on delicate, purple stems.

The peppered moth is renowned for its markings that have evolved to camouflage it against lichen in the countryside and soot in the city. It can be seen in gardens, woods and parks, and along…